Cylinder cutout strategy for operation of engine

Abstract

The disclosure provides a method to operate an engine including a first set of cylinders and a second set of cylinders with the help of an engine control module (ECM). The ECM determines a current engine speed, a current engine load, and a current degree of rotation. If the current engine load is below a threshold load that corresponds to the current engine speed, the ECM selects a cylinder cutout strategy. The ECM initiates the cylinder cutout strategy wherein the fuel supply is cutout alternatively between the first set of cylinders and the second set of cylinders at a predetermined degree of rotation. The fuel injection is modified by a predetermined amount to a set of non-cutout cylinders. The ECM deactivates the cylinder cutout strategy when the current engine load exceeds the threshold load that corresponds to the current engine speed.

What is claimed is: 
     
         1 . A method of operation of an engine, the method comprising:
 determining a current engine speed, a current engine load, and a coolant temperature via an engine control module;   determining a current degree of rotation measured via a crank position sensor;   determining a cylinder cutout strategy from a plurality of cylinder cutout strategies upon determining that the current engine load is below a threshold load corresponding to the current engine speed, wherein the cylinder cutout strategy comprises using a first set of cylinders and a second set of cylinders in an alternating manner, wherein the second set of cylinders is different from the first set of cylinders;   initiating the cylinder cutout strategy wherein fuel supply is cutout alternatively between the first set of cylinders and the second set of cylinders, upon detection that the current degree of rotation corresponds to a predetermined degree of rotation;   modifying fuel injection timing in the plurality of cylinders, wherein a set of non-cutout cylinders from the plurality of cylinders, is configured to receive a predetermined amount of fuel upon completion of the predetermined degree of rotation to facilitate a stable operation of the engine; and   deactivating the cylinder cutout strategy when the current engine load exceeds the threshold load corresponding to the current engine speed.